KR0133875Y1 - Rotating sensing device of reel disc - Google Patents
Rotating sensing device of reel disc Download PDFInfo
- Publication number
- KR0133875Y1 KR0133875Y1 KR2019930015767U KR930015767U KR0133875Y1 KR 0133875 Y1 KR0133875 Y1 KR 0133875Y1 KR 2019930015767 U KR2019930015767 U KR 2019930015767U KR 930015767 U KR930015767 U KR 930015767U KR 0133875 Y1 KR0133875 Y1 KR 0133875Y1
- Authority
- KR
- South Korea
- Prior art keywords
- reel disk
- reel
- light
- grooves
- present
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
- G11B23/42—Marks for indexing, speed-controlling, synchronising, or timing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
본 고안은 테이프 레코더에 사용되는 릴디스크의 회전속도 감지장치에 관한 것으로서, 제조비용 및 조립공수를 줄일 수 있도록 개량한 릴디스크의 회전속도 감지장치를 제공하는데 그 목적이 있다. 본 고안은, 릴디스크의 저면에, 방사상으로 다수개의 홈이 형성되고, 이 홈의 바닥면에 광센서로부터 조사되는 광을 난반사시키는 경사면이 형성되어, 홈과 홈이 형성되지 않은 부위에서 반사되는 광량의 차를 이용하여 릴디스크의 회전속도를 감지하도록 구성된다.The present invention relates to a revolving speed detecting device for a reel disk used in a tape recorder, and an object thereof is to provide a revolving speed detecting device for an improved reel disk to reduce manufacturing costs and assembly labor. According to the present invention, a plurality of grooves are formed radially on the bottom surface of the reel disk, and an inclined surface that diffusely reflects the light irradiated from the optical sensor is formed on the bottom surface of the groove, so that the grooves and the grooves are not reflected. It is configured to detect the rotational speed of the reel disk using the difference in the amount of light.
Description
제1도는 종래 릴디스크의 회전속도 감지장치를 개략적으로 도시한 분리사시도.1 is an exploded perspective view schematically showing an apparatus for detecting a rotation speed of a conventional reel disk.
제2도는 본 고안에 따른 릴디스크의 회전속도 감지장치를 도시한 사시도.Figure 2 is a perspective view showing a rotation speed detecting device of the reel disk according to the present invention.
제3도는 제2도의 A-A선 확대단면도.3 is an enlarged cross-sectional view taken along the line A-A of FIG.
제4도는 종래 릴디스크의 회전속도 감지장치에 의하여 출력되는 신호파형도이고,Figure 4 is a signal waveform output by the conventional rotational speed detection device of the reel disk,
제5도는 본 고안에 따른 릴디스크의 회전속도 감지장치에 의하여 출력되는 신호 파형도이다.5 is a signal waveform diagram output by the rotational speed sensing device of the reel disk according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 릴디스크 11 : 홈10: reel disc 11: groove
12 : 경사면 20 : 광센서12: slope 20: optical sensor
본 고안은 테이프 레코더에 사용되는 릴디스크의 회전속도 감지장치에 관한 것으로서, 더 상세하게는 구성부품수를 줄임과 동시에 조립이 간단하도록 개량한 릴디스크의 회전속도 감지장치에 관한 것이다.The present invention relates to a revolving speed detecting device for a reel disk used in a tape recorder, and more particularly, to a revolving speed detecting device for improved reel disks while reducing the number of components.
종래의 테이프 레코더에서 릴디스크의 회전속도를 감지하기 위한 장치로는 제1도에 도시되어 있는 바와같이, 릴디스크(1)의 저면에 부착되는 흰색의 광반사부(3)와 흑색의 광흡수부(4)가 방사상으로 반복적으로 배열된 리플렉터(reflector:2)와, 이플렉터(2)에 광을 조사하고 이로부터 반사되는 광으로부터 리플렉터(2)의 회전변화를 펄스 검출하는 광센서(5)를 구비하여, 테이프의 감김량에 따라 변화되는 릴디스크(1)의 회전속도를 감지하도록 되어 있었다.In a conventional tape recorder, a device for detecting a rotational speed of a reel disk includes a white light reflecting portion 3 and a black light absorbing portion attached to a bottom surface of the reel disk 1, as shown in FIG. A reflector 2 in which portions 4 are repeatedly arranged radially, and an optical sensor 5 for irradiating light to the reflector 2 and detecting a rotational change of the reflector 2 from the light reflected therefrom. ), To sense the rotational speed of the reel disk 1, which varies with the amount of winding of the tape.
그러나 이와같이 구성된 종래 릴디스크의 회전속도 감지장치는, 광반사부(30와 광흡수부(4)가 방사상으로 반복적으로 배열된 리플렉터(2)를 필요로 하므로, 제조비용이 상승하게 되고, 또한 상기의 리플렉터를 릴디스크의 저면에 부착하여야 하므로 조립공수가 추가되어 생산성이 저하되는 문제점이 있었다.However, the conventional reel speed sensing device configured as described above requires a reflector 2 in which the light reflecting portion 30 and the light absorbing portion 4 are repeatedly arranged radially, thereby increasing the manufacturing cost. Since the reflector should be attached to the bottom of the reel disk, there is a problem in that the productivity is reduced due to the additional assembly labor.
본 고안은 상술한 바와같은 문제점을 감안하여 안출된 것으로서, 제조비용 및 조립공수를 줄일 수 있도록 개량한 릴디스크의 회전속도 감지장치를 제공하는데 그 목적이 있다.The present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus for detecting a revolving speed of a reel disk, which can be improved to reduce manufacturing cost and assembly labor.
상기의 목적을 달성하기 위하여 본 고안은, 릴디스크와, 릴디스크의 저면으로 광을 조사하고 이로부터 반사된 광으로부터 릴디스크의 회전속도를 감지하는 광센서를 구비하여 된 릴디스크의 회전속도 감지장치에 있어서, 상기 릴디스크의 저면에, 방사상으로 다수개의 홈이 형성되고, 이 홈의 바닥면에 상기 광센서로부터 조사되는 광을 난반사시키는 경사면이 형성된 점에 그 특징이 있다.In order to achieve the above object, the present invention provides a reel disk and a rotational speed detection of a reel disk provided with an optical sensor for irradiating light to the bottom surface of the reel disk and detecting the rotational speed of the reel disk from the light reflected therefrom. The device is characterized in that a plurality of grooves are formed radially on the bottom surface of the reel disk, and an inclined surface that diffusely reflects light emitted from the optical sensor is formed on the bottom surface of the groove.
이하 첨부된 도면을 참조하여 본 고안에 따른 바람직한 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 고안에 따른 릴디스크의 회전속도 감지장치는 제2도 및 제3도에 도시되어 있는 바와같이, 릴디스크(10)의 저면에 방사상으로 다수개의 홈(11)이 형성되고, 이 홈(11)의 바닥면에는 입사되는 광을 난반사시켜 반사되는 광의 광량을 줄이기 위하여 그 중앙부로부터 양측 가장자리 쪽으로 하향되는 경사면(12)이 형성된다.As shown in FIGS. 2 and 3, the rotation speed detecting device of the reel disk according to the present invention has a plurality of grooves 11 radially formed on the bottom of the reel disk 10, and the grooves 11 In order to reduce the amount of light reflected by the diffuse reflection of the incident light is formed on the bottom surface of the inclined surface 12 is inclined downward 12 toward both edges.
그리고 상기 릴디스크(10)의 하측에는 릴디스크(10)의 저면으로 광을 조사하여 릴디스크(10)의 저면에 형성된 홈(11)과 홈이 형성되지 않은 부위에서 반사되는 광으로부터 릴디스크(10)의 회전속도 변화를 펄스 검출하는 광센서(20)가 고정 설치된다.The lower side of the reel disk 10 is irradiated with light to the bottom surface of the reel disk 10 and the reel disk (10) An optical sensor 20 for pulse detection of a change in rotational speed of 10) is fixedly installed.
이와같이 구성된 본 고안에 따른 릴디스크의 회전속도 감지 장치는, 릴디스크(10)의 홈(11)이 형성되지 않은 부위가 종래 리플렉터(2)의 광반사부(3) 역할을 하게 되고, 릴디스크(10)의 저면에 형성된 홈(11)이 종래 리플렉터(2)의 광흡수부(4) 역할을 하게 된다.In the rotation speed detecting device of the reel disk according to the present invention configured as described above, a portion where the groove 11 of the reel disk 10 is not formed serves as the light reflecting portion 3 of the conventional reflector 2, the reel disk The groove 11 formed at the bottom of the 10 serves as the light absorbing portion 4 of the conventional reflector 2.
즉, 홈(11)이 형성되지 않은 부위와 홈(11)의 바닥면과의 높이 차이와, 홈(11)의 바닥면에 형성된 광을 난반사시키는 경사면(12)에 의해 홈(11)으로부터 반사된 광의 광량이 홈(11)이 형성되지 않은 부위로부터 반사되는 광의 광량보다 작게 됨에따라 홈(11)과 홈이 형성되지 않은 부위가 종래 리플렉터(2)의 광흡수부(4)와 광반사부(3)의 역할을 하게 된다.That is, the height difference between the portion where the groove 11 is not formed and the bottom surface of the groove 11 and the inclined surface 12 which diffusely reflects the light formed on the bottom surface of the groove 11 are reflected from the groove 11. As the amount of light emitted is smaller than the amount of light reflected from the portion where the groove 11 is not formed, the groove 11 and the portion where the groove is not formed are light absorbing portions 4 and light reflecting portions of the conventional reflector 2. It will play the role of (3).
제4도 및 제5도에는 상기의 내용을 뒷받침하는 본 출원인의 실험결과가 도시되어 있다.4 and 5 show the applicant's experimental results supporting the above contents.
도면에서 제4도는 종래 리플렉터를 사용하는 경우의 실험결과를 나타낸 것이고, 제5도는 본 고안에 따른 실험결과를 나타낸 것으로서, 종래 리플렉터를 사용하는 경우보다 본 고안의 경우가 펄스 출력차에 있어서는 다소 떨어지나 릴디스크의 회전속도 변화를 광센서로서 펄스 검출하는데는 지장을 주지 않게 된다.Figure 4 shows the experimental results in the case of using a conventional reflector, Figure 5 shows the experimental results according to the present invention, the case of the present design is slightly lower in the pulse output difference than in the case of using a conventional reflector It does not interfere with pulse detection of the change in the rotational speed of the reel disk as an optical sensor.
이상에서 설명한 바와같이 본 고안 릴디스크의 회전속도 감지장치에 의하면, 릴디스크의 저면에 다수개의 홈을 방사상으로 형성하여 이들이 종래 방식에서 사용되던 리플렉터의 역할을 수행하도록 되어 있으므로, 종래 사용되던 리플렉터를 삭제할 수 있어 제조비용 및 조립공수를 줄일 수 있게 된다.As described above, according to the rotational speed sensing device of the present invention, since a plurality of grooves are formed radially on the bottom surface of the reel disk to perform the role of the reflector used in the conventional method, It can be deleted, reducing manufacturing costs and assembly labor.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930015767U KR0133875Y1 (en) | 1993-08-16 | 1993-08-16 | Rotating sensing device of reel disc |
| US08/278,223 US5497080A (en) | 1993-08-16 | 1994-07-21 | Rotation velosity sensor for a tape reel disk in which light is reflected off of the reel disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930015767U KR0133875Y1 (en) | 1993-08-16 | 1993-08-16 | Rotating sensing device of reel disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950007194U KR950007194U (en) | 1995-03-21 |
| KR0133875Y1 true KR0133875Y1 (en) | 1999-03-20 |
Family
ID=19361270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930015767U KR0133875Y1 (en) | 1993-08-16 | 1993-08-16 | Rotating sensing device of reel disc |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5497080A (en) |
| KR (1) | KR0133875Y1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19915252A1 (en) * | 1999-04-03 | 2000-10-05 | Schlafhorst & Co W | Disk in the support bearing assembly for the shaft of an open-end spinning rotor has marked surface zones to give structured light reflections for measurement of the disk rotary speed |
| ES2293878T3 (en) * | 1999-09-28 | 2008-04-01 | Snap-On Equipment Gmbh | WHEEL BALANCING MACHINE FOR A CAR WHEEL WITH COMPACT ANGULAR ENCODER. |
| US6750446B2 (en) * | 2001-01-17 | 2004-06-15 | Fuji Photo Film Co., Ltd. | Ultrasonic-welding apparatus, optical sensor and rotation sensor for the ultrasonic-welding apparatus |
| JP2005003539A (en) * | 2003-06-12 | 2005-01-06 | Sharp Corp | Rotation detector and input instrument using the same |
| JP5376593B2 (en) * | 2009-11-09 | 2013-12-25 | 公立大学法人首都大学東京 | Method and apparatus for creating magnetic resonance elastogram (MRE), and ball vibrator for creating magnetic resonance elastogram (MRE) |
| US20170189123A1 (en) * | 2016-01-06 | 2017-07-06 | Biosense Webster (Israel) Ltd. | Optical Registration of Rotary Sinuplasty Cutter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387299A (en) * | 1979-06-25 | 1983-06-07 | Yazaki Sogyo Kabushiki Kaisha | Travel-distance signal generator for vehicles |
-
1993
- 1993-08-16 KR KR2019930015767U patent/KR0133875Y1/en not_active IP Right Cessation
-
1994
- 1994-07-21 US US08/278,223 patent/US5497080A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5497080A (en) | 1996-03-05 |
| KR950007194U (en) | 1995-03-21 |
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